.welcome-page {
    position: relative;
    height: 100%;
    padding: 250px 100px 0;

    .welcome-bg {
        background: url("https://gw.alipayobjects.com/mdn/rms_08e378/afts/img/A*P0S-QIRUbsUAAAAAAAAAAABkARQnAQ");
        background-size: 100%;
        opacity: 0.35;
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
    }
    .welcome-title {
        text-align: center;
    }
}